Cytophotometric contribution to the knowledge of ceratonia siliqua seed development

Detalhes bibliográficos
Autor(a) principal: Warden, Juan
Data de Publicação: 1980
Outros Autores: Martins-Loução, Maria Amélia, Sousa, Hermínia C. de Sousa
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10451/4341
Resumo: Cytophotometric analysis of nuclear DNA content in differen áreas of young Ceratonia siliqua seeds were made. The relative DNA amount in 50 interphase nuclei per each area were determined using a Vickers M 85 cytodensitometer. The frequency distribuition of DNA content in individual nuclei falls in the 2C and 4C classes, with the predominance of 2C nuclei. The DNA content of normal endosperm nuclei range from 2C to 6C (external layer) or from 2C to 9C internal layer), with the predominance in both cases of 3C class, thus agreeing with the triploid constitution of this tissue. Some cases of abnormal, collapsed-like embryos, accompanied by diploid (2C and 4C classes) endosperm, were detected. The possible involvement of diploid endosperm in failure of embryos development, as frequently observed in Ceratonia siliqua, is discussed.
id RCAP_06011fff2217621495422109a6f614af
oai_identifier_str oai:repositorio.ul.pt:10451/4341
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Cytophotometric contribution to the knowledge of ceratonia siliqua seed developmentAlfarrobaCeratonia siliqua L.Biologia vegetalReprodução vegetalSementesDesenvolvimentoCytophotometric analysis of nuclear DNA content in differen áreas of young Ceratonia siliqua seeds were made. The relative DNA amount in 50 interphase nuclei per each area were determined using a Vickers M 85 cytodensitometer. The frequency distribuition of DNA content in individual nuclei falls in the 2C and 4C classes, with the predominance of 2C nuclei. The DNA content of normal endosperm nuclei range from 2C to 6C (external layer) or from 2C to 9C internal layer), with the predominance in both cases of 3C class, thus agreeing with the triploid constitution of this tissue. Some cases of abnormal, collapsed-like embryos, accompanied by diploid (2C and 4C classes) endosperm, were detected. The possible involvement of diploid endosperm in failure of embryos development, as frequently observed in Ceratonia siliqua, is discussed.Repositório da Universidade de LisboaWarden, JuanMartins-Loução, Maria AméliaSousa, Hermínia C. de Sousa2011-10-26T17:17:01Z19801980-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10451/4341engPortug. Acta Biol. (A) (1-4): 103-118. 19800874-9035info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-08T15:45:15Zoai:repositorio.ul.pt:10451/4341Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:29:59.422755Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Cytophotometric contribution to the knowledge of ceratonia siliqua seed development
title Cytophotometric contribution to the knowledge of ceratonia siliqua seed development
spellingShingle Cytophotometric contribution to the knowledge of ceratonia siliqua seed development
Warden, Juan
Alfarroba
Ceratonia siliqua L.
Biologia vegetal
Reprodução vegetal
Sementes
Desenvolvimento
title_short Cytophotometric contribution to the knowledge of ceratonia siliqua seed development
title_full Cytophotometric contribution to the knowledge of ceratonia siliqua seed development
title_fullStr Cytophotometric contribution to the knowledge of ceratonia siliqua seed development
title_full_unstemmed Cytophotometric contribution to the knowledge of ceratonia siliqua seed development
title_sort Cytophotometric contribution to the knowledge of ceratonia siliqua seed development
author Warden, Juan
author_facet Warden, Juan
Martins-Loução, Maria Amélia
Sousa, Hermínia C. de Sousa
author_role author
author2 Martins-Loução, Maria Amélia
Sousa, Hermínia C. de Sousa
author2_role author
author
dc.contributor.none.fl_str_mv Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Warden, Juan
Martins-Loução, Maria Amélia
Sousa, Hermínia C. de Sousa
dc.subject.por.fl_str_mv Alfarroba
Ceratonia siliqua L.
Biologia vegetal
Reprodução vegetal
Sementes
Desenvolvimento
topic Alfarroba
Ceratonia siliqua L.
Biologia vegetal
Reprodução vegetal
Sementes
Desenvolvimento
description Cytophotometric analysis of nuclear DNA content in differen áreas of young Ceratonia siliqua seeds were made. The relative DNA amount in 50 interphase nuclei per each area were determined using a Vickers M 85 cytodensitometer. The frequency distribuition of DNA content in individual nuclei falls in the 2C and 4C classes, with the predominance of 2C nuclei. The DNA content of normal endosperm nuclei range from 2C to 6C (external layer) or from 2C to 9C internal layer), with the predominance in both cases of 3C class, thus agreeing with the triploid constitution of this tissue. Some cases of abnormal, collapsed-like embryos, accompanied by diploid (2C and 4C classes) endosperm, were detected. The possible involvement of diploid endosperm in failure of embryos development, as frequently observed in Ceratonia siliqua, is discussed.
publishDate 1980
dc.date.none.fl_str_mv 1980
1980-01-01T00:00:00Z
2011-10-26T17:17:01Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10451/4341
url http://hdl.handle.net/10451/4341
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Portug. Acta Biol. (A) (1-4): 103-118. 1980
0874-9035
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
_version_ 1799134186080043008

Registros relacionados